US 1407751 A
Description (OCR text may contain errors)
C. E. IEFFEHS.
AFPLCATION FILED NOV: I7, 1919. r- 1,407,751, Patented Feb. 28, 1922.
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Cla r'e n ce' .Tejfe rms C. E. JEFFEHS.
APPLscAUoN man Nov: l?, 1919.
Patented Feb. 28, 1922.
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(7a ifa/2 ce UNITED sTATEs PATENT oEElcE.
CLARENCE E. JEFFERS, 0F INDIANAPOLIS, INDIANA, ASSIGNOR TO HOWARD C.
MARMON, OF INDIANAPOLIS, *INDIANA INSTRUMENT BOARD.
Specification of Letters latent. Patented Feb. 28, 1922.
Application led November 17, 1919. Serial No. 338,650. f
To all whom it my concer/rb.'
Be it known that I, CLARENCE E. JEFEERS, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of indiana, have invented a new and useful instrument Board, of which the .following is a specification.
The object of my invention is to provide a compact instrument board for automobiles, air ships, etc., so constructed that the instruments `may be thoroughly illuminated, when desired, without any glare in the eyes of the operator,V and without unnecessary illumination of'parts other than the instruments to be observed.
The accompanying drawings illustrate my invention. Fi 1 is a front eleva-tion of a commercial em odiment of my invention for use on automobiles; Fig. 2 a rear elevation; and Fig. 3 a section on line 3-3 of Fig. 1.
In the drawings, 10 indicates a rim-like `main body of desired form conveniently the glass.l
chamferred around its outer edge to fit an opening in the board 11, and around its inner edge to receive the glass plate 12.
Secured to the rea-r face of body 10 is an instrument-holdingbody 13 which also serves'to retain glass 12 in its seat. 'Body 13 is conveniently provided with a number of pockets 14 in which may be mounted desired instruments 15, held removably iny place by appropriate fasteners 16 so that the instruments may, when necessary, be withdrawn from their pockets without removing the entire structure.
Secured to, or formed integral with rim 10,'preferably at its top, is a lamp-pocket 17, and mounted in body 13 is a lamp socket 18 preferably so arranged that the lamp 19 may be placed so as to overlie the upper edge` of glass 12, the casing 2() thoroughly shielding the lamp so that no light ra s may pass?y from it except by refraction t rough The filament of lamp 19 may be 'conveniently arranged slightly to the rearof the inner face of glass 12 so that rays from the filament strlking said face willbe reflected to the faces of theinstruments and by them reflected back through the glass 12 to the observer.
. having By thisarrangement, Ifind that the instruments are thoroughly illuminated by a very small power lamp and that there is no appreciable illumination of the space surrounding the driver, as is the case where the source of light, evenl though shielded, is so arranged that rays may be reflect/ed to the driver from the outer surface of the protecting glass.
With my arrangement, even the light rays which strike the glass faces of the instrum'ents and are reiected therefrom, must' pass through glass 12 and there become so softened as to be unobjectionable.
I claim as y,my invention:
1. An instrument boa-rd, comprising a main body having a sight opening therethrough, an instrument having a face to be read through said opening, said instrument greater dimensions than the sight opening, means'by which the instrument is held in place, ya transparent cover carried by the main body and covering the face of the instrument, an electric lamp arranged with its fila-ment substantially in the plane of the transparent cover at an unobstructed edge thereof, and a shield preventing the passage of direct rays from the lamp to th observer or to the instrument.
2. An instrument board, comprising a main body having ai sight opening therethrough, an instrument having a face `to.
cover at an unobstructed edge thereof, and
a shield preventing the passage of direct rays from the lamp to the observer or to the instrument.
In witness whereof, I have hereunto set my hand at Indianapolis, Indiana, this 7th day of November, A. D. one thousand nine hundred and nineteen.
CLARENCE E. JEEEEEs.